Divers often come across weird, unexpected things. It’s not always a good idea to investigate up close. But when John Roney saw a tentacle just above him, he had to see what was happening. “Several ...

Scientists are unraveling the mysteries of the ocean’s squishiest creatures—including one jelly that might be the oldest animal species on Earth. A pair of sea butterflies (Corolla spectabilis) drift ...

Nature's deadliest creatures employ distinct defense mechanisms. Venomous animals inject toxins through bites or stings, like cobras and jellyfish. Po ...

A rare, humongous jellyfish species with tentacles up to 70 feet long was spotted off the Texas coast this week, horrifying beachgoers, according to a report. At least 10 of the gelatinous giants — ...